CVE-2025-7647: Insecure Temporary File Handling in run-llama/llama_index

Severity: high (CVSS 7.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-09-27 · updated 2026-10-09
Weakness: CWE-378

Description

The llama-index-core package, up to version 0.12.44, contains a vulnerability in the `get_cache_dir()` function where a predictable, hardcoded directory path `/tmp/llama_index` is used on Linux systems without proper security controls. This vulnerability allows attackers on multi-user systems to steal proprietary models, poison cached embeddings, or conduct symlink attacks. The issue affects all Linux deployments where multiple users share the same system. The vulnerability is classified under CWE-379, CWE-377, and CWE-367, indicating insecure temporary file creation and potential race conditions.

Affected products

run-llama/llama_index: before v0.13.0 — fixed in v0.13.0

How to fix

Upgrade to a fixed version: run-llama/llama_index v0.13.0. Check the vendor advisory for mitigations.

References

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